Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 28 July 2026 at 00:01 UTC. It is kept here as a record.
It is the 9th strongest of the 61 detections recorded within 20 km of this point since 12 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 27 at 7:53PM EDT until July 27 at 8:00PM EDT by NWS Wilmington OH
Urban PEI: 177,389 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- March 12, 2026 · score 43 · 3.4 km
- July 27, 2026 · score 43 · 10.9 km
- June 17, 2026 · score 76 · 13.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 39.5425, -86.7728 |
| Nearest City | Plainfield (36 km) |
| Urban exposure index (PEI) | 177.4K within 50 km |
| Impact Tier | significant |
| Date | 2026-07-27 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9bd7ab1dce6d5324060817f7a7250b3a |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-27 — time not reported.
First archived: 2026-07-27T23:54:29.365Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Brown, OH; Clermont, OH; Clinton, OH; Highland, OH; Bartholomew, IN; Brown, IN; Decatur, IN; Clark, IL; Crawford, IL and 6 more areas |
| Headline | Severe Thunderstorm Warning issued July 27 at 7:53PM EDT until July 27 at 8:00PM EDT by NWS Wilmington OH |
| Expires | 2026-07-27T20:01:00-04:00 |
| SenderName | NWS Wilmington OH |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9bd7ab1dce6d5324060817f7a7250b3afc110615.001.1","noaa_urn:oid:2.49.0.1.840.0.6f68e2764bb2d4cc69196c9505745ea03ab0a478.002.1","noaa_urn:oid:2.49.0.1.840.0.82e67ce19ae58c01fd4032bb9a66a777c7fab840.001.1","noaa_urn:oid:2.49.0.1.840.0.18859144c7e91b363bd9d96ce7a0bbc6284b17cf.001.1","noaa_urn:oid:2.49.0.1.840.0.50f47c9c94ff8f31a1a7eb53ce793445e370a209.001.1","noaa_urn:oid:2.49.0.1.840.0.78d4e1580d8903e35838e93ab8cb93647befda51.001.1","noaa_urn:oid:2.49.0.1.840.0.979ee213e4ab7da12a83b094647198589482a2bf.001.1","noaa_urn:oid:2.49.0.1.840.0.c07a21f76a372dbc74832660cd2b5b9d5c499d8e.001.1","noaa_urn:oid:2.49.0.1.840.0.0902fe4ddc0bbbffcd4c4f3874bf4c909d45d70f.001.1"] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?